graft copolymers of acrylamide on carboxymethyl cellulose (d.s 0.4-0.5) were prepared by the use of ceric ion, ceric ion/reductant molecule initiator systems in aqueous medium. the graft copolymers were characterized by ir spectroscopy. the extent of graft copolymerisation was measured in terms of grafted chains as a function of both ceric ion and ceric ion/reductant molecule concentrations. it...

modification of natural polymers like protein by graft co-polymerization is an important method to incorporate the desired properties into the backbone. soy protein concentrate (spc) was grafted with ethylmethacrylate (ema) using ascorbic acid /potassium persulphate as redox initiator system under pressure. different reaction parameters such as reaction time, reaction pressure, solvent amount, ...

corneal transplantation is the most common and successful form of solid organ transplantation with a 2-year survival rate of over 90% in low risk cases. this high success rate may be due to the immune privileged status of the cornea, acaid (anterior chamber associated immune deviation) induction phenomena and secretion of inhibitory molecules by corneal cells such as il1-ra, il-1a and fas ligan...

Kidney Transplantation in children is the treatment of choice to treat end stage renal disease. Improvements in immunosuppressive management have dramatically reduced the risk of early acute rejection and graft loss, however the long term results in terms of graft survival and morbidity still require search for new immunosuppressive regimens. Reducing of side effects are the challenges for impr...

PURPOSE We describe our experience with the Permacol graft in anophthalmic socket reconstruction, and compare it to the autologous buccal mucosal graft, emphasizing the postoperative vascularization and contraction of each graft. METHODS This was a retrospective comparative study. We measured the time necessary for the graft surface to be completely vascularized, as well as the fornix depth o...

Introduction The stomach graft is the most common digestive organ used to restore the intestinal continuity following esophagectomy for benign and malignant diseases. The colon and jejunal grafts are held in reserve .Graft necrosis is a dreaded and devastating complication and it is defined as death of the conduit used to reconstruct diseased esophagus. However graft ischemia is defined as inad...

The cause and timing of first liver allograft failure was evaluated in 177 patients who underwent a second liver transplant between January 1984 and December 1988. The population studied consisted of 94 men and 83 women with a mean age 41.3 +/- 1.0 yr (mean +/- S.E.M.). Mean first-graft survival was 130.6 +/- 22.9 days (range = 0 to 2,073 days). Sixty-eight percent of the grafts failed in the f...

OBJECTIVES To define the risk factors for delayed graft function and study the impact of such delays on renal function and long-term allograft survival in renal transplant recipients. DESIGN Single-centre retrospective study. SETTING Regional hospital, Hong Kong. PATIENTS Records of 118 Chinese renal transplant recipients from 1 July 1997 to 31 July 2005 were reviewed, and categorised int...

Compliance mismatch between stent graft and host artery may induce complications and blood flow disorders. However, few studies have been reported on stent graft compliance. This study aims to explore the deformation and compliance of stent graft in stented and unstented zones under three pressure ranges. Compliance of two stent grafts incorporated with polyurethane graft (nitinol-PU) and polye...